94 lines
3.2 KiB
TypeScript
94 lines
3.2 KiB
TypeScript
/*
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Copyright 2015-2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React, { ComponentType, PropsWithChildren } from "react";
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import { logger } from "matrix-js-sdk/src/logger";
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import { _t } from "./languageHandler";
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import BaseDialog from "./components/views/dialogs/BaseDialog";
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import DialogButtons from "./components/views/elements/DialogButtons";
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import Spinner from "./components/views/elements/Spinner";
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type AsyncImport<T> = { default: T };
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interface IProps {
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// A promise which resolves with the real component
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prom: Promise<ComponentType<any> | AsyncImport<ComponentType<any>>>;
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onFinished(): void;
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}
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interface IState {
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component?: ComponentType<PropsWithChildren<any>>;
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error?: Error;
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}
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/**
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* Wrap an asynchronous loader function with a react component which shows a
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* spinner until the real component loads.
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*/
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export default class AsyncWrapper extends React.Component<IProps, IState> {
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private unmounted = false;
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public state: IState = {};
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public componentDidMount(): void {
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this.props.prom
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.then((result) => {
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if (this.unmounted) return;
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// Take the 'default' member if it's there, then we support
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// passing in just an import()ed module, since ES6 async import
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// always returns a module *namespace*.
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const component = (result as AsyncImport<ComponentType>).default
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? (result as AsyncImport<ComponentType>).default
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: (result as ComponentType);
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this.setState({ component });
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})
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.catch((e) => {
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logger.warn("AsyncWrapper promise failed", e);
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this.setState({ error: e });
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});
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}
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public componentWillUnmount(): void {
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this.unmounted = true;
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}
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private onWrapperCancelClick = (): void => {
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this.props.onFinished();
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};
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public render(): React.ReactNode {
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if (this.state.component) {
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const Component = this.state.component;
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return <Component {...this.props} />;
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} else if (this.state.error) {
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return (
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<BaseDialog onFinished={this.props.onFinished} title={_t("Error")}>
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{_t("Unable to load! Check your network connectivity and try again.")}
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<DialogButtons
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primaryButton={_t("Dismiss")}
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onPrimaryButtonClick={this.onWrapperCancelClick}
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hasCancel={false}
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/>
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</BaseDialog>
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);
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} else {
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// show a spinner until the component is loaded.
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return <Spinner />;
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}
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}
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}
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